Apparatus for radio tuning, volume control, wave band selection, and other purposes



F. H. OWENS Oct. 26, 1948.

VOLUME CONTROL,

HER PURPOS APPARATUS FOR -RADIO TUNING,

- WAVE BAND SELECTION, AND OT Filed July 11, 1945 5 Sheets-Sheet 1 iNvENToR Harman/A. flmsws ATT Oct. 26,1943.

Filed July 11. 1945 F. H. OWENS 2,452,067

APPARATUS FOR RADIO TUNING, VOLUME CONTROL, WAVE BAND SELECTION, AND OTHER PURPOSES v 5 Sheets-Sheet 2 A F Hwy-3R iz-zwa/x new 'flcE. T BY ATT RN'EY Oct. 26, 1948. F. H. OWENS 2,452,067

APPARATUS FOR RADIO TUNING, VOLUME CONTROL, WAVE BAND SELECTION, AND OTHER PURPOSES Filed July 11, 1945 5 Sheets-Sheet 3 Oct. 26, 1948. F. H. OWENS 2,452,067

APPARATUS FOR RADIO TUNING, VOLUME CONTROL,

WAVE BAND SELECTION, AND OTHER PURPOSES 5 SheetsSheet 4 Filed July 11, 1945 Oct. 26, 1.948. F. H. OWENS 5 APPARATUS FOR RADIO TUNING, VOLUME CONTROL,

WAVE BAND SELECTION, AND OTHER PURPOSES I I Filed July 11, 1945 s sheets-sheet 5 INVENTOR fifz-rma/v 4- 0W5:

Patented Oct. 26, 1948 UNITED STATES OFFICE APPARATUS RADIO TUNING, VOLUME CONTROL, WAVE BANDSELECTION, AND

OTHER PURPOSES 24 Claims.

The invention here disclosed relates to apparatus for efiecting various control purposes.

In particular, the invention relates to the control of radio apparatus, for example, to effect tuning adjustments, volume control, wave band selection, the tuning of a radio set on or ofi, and the like.

Special objects of the invention are to provide apparatus for such purposes which while thoroughly efficient and practical will be relatively inexpensive, consist of but few parts and take up small space.

In line with these objects it is a purpose of the invention to provide automatic control apparatus which at small additional cost can be combined with ordinary radio receiving sets, thus to convert a radio receiver of acceptable or approved design from ordinary manual control operation to one either fully or partly automatic in character.

Other objects of the invention are to make it a simple and easily understandable operation for the average individual to initially adjust or set the mechanism, for instance, to effect reception of certain radio stations, in selected wave bands, at desired sound levels, and the like.

Other objects are to provide apparatus of the character indicated which can be readily manufactured and assembled and which will be rugged in character and not liable to get out of order even under rough handling.

Other objects of the invention are to provide apparatus of the character indicated which can be readily adapted to accomplishing various control purposes and easily changed to meet different requirements of design or operating conditions,

such as might be encountered in adapting the invention to diiierent kinds or types of radio receivers.

Other desirable objects and the novel features of invention by which all objects are attained are set forth or will appear in the course of the following specification.

The drawings accompanying andforming part of the specification illustrate a present practical embodiment of the invention. Structure, however, may be modified and changed as regards the immediate disclosure, all within the true intent and broad scope of the invention as hereinafter defined and claimed.

Fig. 1 in the drawings is a front elevation of a radio receiving set having featuresof the invention incorporated therein; Fig. la is an end view of the same;

Fig. 2 is an enlarged vertical sectional view as on substantially the plane of line 22 ofFig. 1,

showing one of the station selecting slides in "the position it occupies after having been actuated to accomplish the turning on of a radio receiver, the selection of a particular wave band, the tuning of a station in the selected wave band and the setting of the volume control for that particular station;

Fig. 3 is a broken horizontal sectional view as on substantially the plane of line 3-3 of Fig. 2;

Fig. 4 is an end view of the slide, and Figs. 5, 6 and 7 are cross sectional details as on lines 5-5, 6-E and 1-1 of Fig. 2;

Figs. 8 and 9 are broken part sectional details of slides having relatively fixed wave band selecting cams;

Fig. 10 is a similar view of similar structure with a wave band selecting cam which can be adjusted and secured in adjusted relation;

Figs. 11, 12 and 13 are cross sectional details on substantially the planes of lines I I-l I, 12-4 2 and l3--l 3 of Fig. 10;

Figs. 14 and 15 are diagrammatic views illustrating operation of the so-called master slide for setting up the rockers controlling the wave band selecting, tuning and volume control functions;

Figs. 16 and 17 are similar views showing the action of one of the so-called secondary slides in picking up and assuming the settings established by the master slide;

Fig. 18 is a front elevation of a receiver incorporating another embodiment of the invention;

Fig. 19 is a broken side elevation of a modified form of secondary slide; and Fig. 20 is a sectional View on line 20-20 of Fig. 19.

In Figs. 1 and 18 the invention is shown embodied in radio receivers of the program preselecting type disclosed in Patent No. 2,403,454, dated July 9, 1946, in which station selecting time keys 29 can be shifted to diiierent station select-' ing or off positions on the scales indicated at 21. j

The receiver illustrated in Fig. 1 is designed for accomplishing automatic reception of any 12 different stations in any 3 different wave bands.

Accordingly, it is provided with 12 different control units numbered 1 to 12, appearing as a row of push buttons 22 across the bottom of the set, and an intermediate so-called master control 23 disposed in the middle of the row.

The control units consist in the main of slides 24, mounted to operate in guide openings 25, 26, in upright supporting plates 21, 28, Figs. 2 and 3.

The master slide may be made up as in co pending patent application Serial No. 540,292, filed June 14, 1944, carrying a knob 29 for volume control, back of that a knob for tuning, and in back of the latter a 3-position lever SI for wave band selection.

These special features being fully disclosed in the application last referred to, are shown here only in their general relation, in Figs. 14 and 15, it being sufficient for the present disclosure to understand that thewave band selecting lever: Si, by means of alink am, effects the setting of a cam 32 pivotally mounted at 33 on a dependent mounted on the lower portion of the slide for effecting adjustments of: the: rocker connected with the volume control 4!; and thatthe fixed cam 42 on the upperedge of the slide lifts a. rocker to raise the-core. of an foff? solenoid 45, said core being connected to rockv the: radio set controlling switch 46 into the "on. position.

The secondary slides, while possibly of the-same basic: structure; that is, made up' of the same slide formations, under the present invention'may carry just the actuating cams. and rely on the master: slide or'othercontrol means for effecting the necessary setting .of those cams.

Thus the secondary slide-illustrated in Figs. 2 to 7, is shown as-havinga wave band selecting cam 41 pivoted at 33 on the dependent portion 34' of the slideand arranged to=be= normally retained in any one: of the three" different wave band selectingspositions 'bya spring-detent at 48. On-

the upper arm: 49 of the; slides; tuningcam- '50 is pivotally mounted at. 5+ andon the lower arm 52 there is shown a volume control cam 53 pivotally supported at 54;

For securing the tuning and volume control earns and 53* inthe positions! to. which they may be set, there is provided inthe illustrationa single'cla mp plate 55* slot-ted at '56 to" loosely hang over the" lug' 51-',.. said plate extending vertically in overlapping engagement over both the cams and being held so by t'hepoint of a screw 58' threaded in the supporting'zlug 51 and having: a

head 59 accessible at the outer end of the slidefor securing orreleasing the clamp plate. To guideand support the'outer end-of this relatively long screw stud, the outer end of the slide is shown as being laterally offset to form an outer bearing 'fi'll'for' thescrew. To protect 'and' concealthe screw head, a cover'may be engaged over theouter offset portion 61- o'f'the slide, and" this cover may, in fact, be a'pus'h button element such as heretofore referredtoand'designaited 22', Fig. l.

The secondary slides made up as described, free. of cam adjusting devices, need occupy but small space'laterally and so canbe placed quite: closely together; asindicat'ed in Fig. l and in. Figs. 4, 5, 6 and '7'. i

The setting of the? cams on the secondary slides may be accomplished; after loosening the screws 58, by adjusting and holding the wave band selecting, tuning and volume control rockers 35,38 and), and then forcing the cams. on the secondary slideupagainst the rockers so adjusted. Themasterslide with its adjusting devices provides aconvenientand practical means for accomplishing the adjustmentbf. the cams on the secondary slides.

tical. and: convenient means-for accomplishing the.

Thus, as indicated in Fig. 14, the wave band selecting lever 3! of the master slide may be turned to any one of its three positions to select the A, B or C wave channel. Then as this slide is pushed inward the cam 42 will operate rocker 43 to turn on the set, if it were off at that time, and the wave band selecting rocker 35 will be turned to pick the selected wave band. While being held in this relation, either by hand or by other means such as by solenoid 62 or by a temporary holding device, the knob 39 may be turned to rock. the cam 37 to tilt rocker 38 to effect tuning of the set to the desired station. Adjustment of knob 29, by rocking cam 39 and tilting the rocker 40 will serve to adjust the volume control d! to the desired sound level for that station, all as indicated in Fig. 15.

The secondary slide chosen for the station so tuned and volume controlled, with the clamp screw 58 loosened as in Fig. 16, may then be pushed in to bring its three cams into engagement with the three adjusted rockers: These: cams- 41, 5d and 53, will then be forced to assume the pesitionof those rockers, asinFig. 17, the opera.

tion being completed by tightening, screw 58 to secure the secondary cams in. the positions they have been forced to assume by the rockers.

While the. master slide providesa handy, pracsetting of the actuating-elements of the. secondary slides, it is contemplated as part ofv the inventionthat the rockers may be set by other means. Thus, asindicated: in Fig. 1, a. knob-63 maybe provided for arbitrarily tuning. the set, it being understood. that in so tuning the tuning. rocker. 38 will be set in a predetermined position. as a. function ofthat tuning; Similarly, the volume.

may be adjusted by means of a separate volume control li lwhich; by varying. the positionzof rocker 4-8, will provide a. means for enabling. a desired setting of the volume control cam 53. I

The spring detent or other holding means 48 for-the wave. band: selecting cam 41 on the secondary slide, while sufiicien-tly positive in effect to accomplish the: setting of the wave band rocker 35 when the secondary slide ispushedin, isyieldable to the operation'of thermaster slide because, as disclosed; in copending "patent application Serial No. 540,292, the wave band selecting lever 36 looks in non-rotatablefashion intoa guide notch in the front panel: 21 when. the master slide is shifted inwardly to make the adjustments described.

In the automatic operation of the set illustrated, the slides,.andthis may include-themaster as: well as; the secondaryslides, are-actuated by the solenoids 62, previously mentioned, having magnetic cores 65 connected with one or more of thearms-or branches 49,52 or. 6643fthe-slides. To get. the par-ts together within a desired close spacing-,thesesolenoids may besta'ggered, that is, some of them connected with the'upper'andothers with the intermediate or lower branches of the slides.

Springs- 61 about the: intermediate branches 6B forward of. the supporting partition -28, project the slides into position for automatic or handv 34 shaped to form a rigid wave. bandrocker; ac-

tuating cam 68, and these fixed cams on different ones of the slides may be inclined in opposite directions or vertical, such as, for example, to set the rocker 35 for reception in the three wave band positions A, B and C.

As an alternate the slides may be all alike but carry cams which can be positively secured in any one of the three positions mentioned.

Thus in Figs. to 13 the slide is shown as having a wave band rocker actuating cam '69 with three notches 10 to be engaged, anyone of them, over 9. lug H turned at an angle from the extension portion 34, the cam after being so located being riveted in that particular angular rela-' tion by a tubular eyelet l2.

For some purposes it may be desirable to locate the 'clock and timing mechanism more nearly at the center of the receiver than shown in Fig. 1.'

This may be accomplished as illustrated in Fig. 18, where the clock is shown disposed substantially at the center of the front panel and with the station selecting timing keys, which may be either of the slide type disclosed in Patent No. 2,403,454, or of the push-button type disclosed in Patent No. 2,385,840, arranged in four banks of keys, two above and at opposite sides of the clock position and the other two below and at opposite sides of the clock.

This view also shows how the wave band selection may be accomplished by wave band selecting switches 13 disposed below and in line with the tuning units, as in Patent No. 2,403,454.

In both embodiments of the invention illustrated a single master slide provides means for effecting tuning and Volume control adjustments.

In the first illustrated form, Fig. 1, 'thewave band selecting lever 3! enables the master slide to be used for the further function of effecting wave band selection. 7

Thus a single master slide may be used for tuning, volume control and, asp'ointed out, in

some instances for wave band selection as well.

The various individual station selecting slides or so-called secondary slides, may then be set from the rockers adjusted and heldby the master slide. This simplifies and reduces the number of parts, since only the master slide need carry the means for adjusting the rockers and the other, secondary slides only need to have means for securing the rocker actuating cams thereon in position after they have been set from the rockers held by the master slide. 7

. Th'e'holding means for the cams on the secondary slides, the clamp plate 55 in Figs. 2 and 3,

has a self-adjusting mounting so thatunder the wedging action of the securing'screw 58 it can engage with equal pressure both upper and lower cams 50 and 53. The loose mounting of this clamp plate at an intermediate point, on the lug 51, and the engagement of the plate at its intermediate point by the screw allows for any free pivoting movement necessary for the plate-to rock one way or another to fully and firmly engage a both cams.

The invention, through the provision of the master tuning unit 23, Fig. 1, provides for thetuning of a radio receiving set at any time, to any station, in any selected wave band and to any desired sound level. This single masterco'ntr ol provides, as well, a means by which any number of secondary control units 22 may be set to bring in at any time, either by hand or by automatic timed operation, a desired station in a selected wave band andat a desired sound level.

, Thus. a radio receiver may be set up for different stations in different wavebands such as broadcast, short wave, frequency modulation, television or the like. If left to automatic operation theselected variety of stations will be automatically brought in at the different selected times, but operation of any one of such units at any time will bring in the station, at the desired sound level, of that particular slide.

The invention may be used with any approved form of tuning mechanism, that indicated at 14, actuated through connections 15 from rocker 38, being merely illustrative.

The blanks for the different slides may be alike so as to permit making up either master or secondary slides from one main set of blanks. E'xcept possibly that the secondary slides may be mounted closer together, the master and secondary slides'may be substituted at different posi tions in the chassis of a ratio receiving set. The secondary slides, carrying fewer parts, are lighter and therefore may-be operated with less power than required by the master slides. Thus, if ne'c-t essary to use two solenoids for operating a master slide, it may be found that a single solenoid will be sufficient to operate a secondary slide.

Most of'many of the parts of the units devolume control cam 53 and the extension 18 of the wave band selecting cam 41. The screw 58 has a wedging engagement with the central portion of the clamp plate so as to apply holding pressure substantially equally on all three of the cams. I

As shown in Figs. 1, 10 and 15, a special holdin button may be provided as indicated at 19, having a dependent cam portion engageable over theouterend edge portion of the master slide to secure itin the inward position.

- By pushing in the slide and then turningthe button or lever I9, the slide may be secured and held in its innermost position. This frees both hands for-"effecting desired adjustments of the tuning and volume control cams. When such adiustments have been made the button will be thrown to'the side to release the slide, it being arranged to normally stand in this released position.

While of particular importance as a radio program timing and preselecting mechanism, as here shown, it will be appreciated that the invention has many other possible uses for timing and control purposes.

The cams or strikers, which when free and the rockersare held, can adjust themselves to the settings "of'the rockers and when secured, with the rockers free,'can be used to return the rock-' ers to those particular settings, may be made up in various shapes and forms to meet special requirements, and this is true also as to the rockers or tilt bars. 1 i

The terms employed herein are therefore to be considered in a descriptive rather than in a limiting sense, eXceptpossibly-as restrictions may be imposed by the state of the prior art.

What is claimed is:

1. Apparatus for effecting tuning and volume monomer 2: oontmlzaddustmentssoi airadinyrecaiuenzeomprisa ing; a :plura-l-ityptmiouable lstation'selectmgmem hers; a rocker. Fina the: ,path of. ,=movement- -;ot :one: portion: of said members for {effecting tuningad.- jgustments; a, rocker-1m the path :of movement :05. another:portiomof:saidrmembersioriefiecting vol ume-control adjustments,-.cams:adiustablymounted on the respectiveportions amentioned.:of;said: members for efiectingyaiiiable adjustments of saifdituningand volume controllingurockens; sen-- arat'e, .hand operable elements on: one of saidmembers for independently setting @thertuningj adliusting 'andnthe: volumenontrol-zadiusting :cams onsaid member, and means- :on: another of :said: members for securing the cams thereon 'inwposivtions' to which they beset :by engagement. with-:the zrock'ersg. Said meanswbeing vreleasahlento freesaid :cams'sfonsettingby ssaidzrockersandz ad:- jilstable to ,securecthe cams in :the- ;positions; to: which-they have been set.

a 2.: Apparatus :for effecting;tuning anduvolume control adjustments of "aradinireceiyer: comprisingma: plurality of movable-stationvseleetingmemhers, arrocker inythe path :of .moyemenit atone portion of saidmembers foreifecting -,tuningrad.- justments, a rocker :in, the: :path of: movement-pf anotherportion of said membersrfor efi -ectingivoi time: control adjustments; cams adiustablymnunt ed on, the respective portions mentioned of said members; for .efliecting; variable adjustments oi saidtuning and'volumercontrolling rckers,.:s,epazraterhand operable-elements: on oneayof'said members for independently setting the tuning.- adjusting and' the volume .controlia-ddusting cams; on,said member, ;a :clax'np:,-plate -loosely'fulcrumed onanother: of said-membersinemgagement with both the tuning and. the volume 2601111313011 cams thereon, and a singlemeans acting :onmsaida clamppla-te tofix the same inholding-engagement with bothzsai'd cams, thecams when neleasedrfrom the: holding. engagement of said -.clamp ;plate' being free to adjust themselves by engagementwithuthe: tuning and volume controllrockers;

'3'. Apparatus *for' effecting: tuning :and 'yoiiume control adjustments-of aradio -receiuer comprising a: plurality of movable, station selecting members, a rocker inthe path-of movement'aofaone: portion of saidrmemhersfor eiiiectingrtuning 3831- justments, a rocker in=.:the ,patli'of-movementuofi anotherportion of saidzmembersfor -efiecfling volume control adjustments, cams: :adziustalrly mounted. on the respectiveportionszmentioned of said members for effecting variable adjustments oi'said. tuning andrvolumecontrolling rroekens; separate, hand operable elements: on; onewoii :said; members for independently setting the tuning adjust-ingand. the volume: contnoiadjusting cams on: said member, and? meanson another :of said members for securing the cams thereon i-nzpositions to which they may .be set by engagementv with the rockers, said means beingmeleasahleto: free said cams for-settihgbysaidrockers; audacijustable to: secure the cams in the positions: to

which they have been--s.et,,1saidz1memberssbeing; in the form of slides mounted for independent actuation. 4

4; Apparatus; for wave: band: selection, timing; and volume control adjustments of. a radioreceiver comprising independently operable-slides, wave. band selecting, tuning and volume.- control cams" adJ'ustabl-y mounted on. one of, said slides, means on said slide for: effecting the. setting; of; the Wave band selecting, tuning and: volume control adjusting cams on said 151K164; wit firbiil-l selecting, tuning and volume control: adjusting mokersengageable and operable the-.nespecativecams on said slide, wauebandselecting, tun ing and volume control. cams adiustably mount ed on another of. .theaslides and :freetm be: shifted to corresponding positions upon engagement with; the respective rockers which have been setJby the cams ofthe; first mentioned slide-and means for eiiecting the securing of said camsi-n their adjusted.relationsionesaid other slide.

5.. Apparatus for wave band selection, tuning and volume control adjustments; of. aradio-re cei-ver comprising independently operable slides, waveband selecting, tuning and volume control cams: adjustably (mounted onone ofsaid slides means on said slide for effecting the-settingwof the wave band "selecting, tuning and avolunzie-control adjusting ,cams- .onsaid, slide, wave; :band: selecting, tuning and volume control adjusting. rockers .eng-ageable. and operable :by themespeetive cams on said slide, wave- :band selecting, tuning and 7 volume: control cams adiustaibly mounted cit-another of the slides and free-to .be shiiited to. corresponding positions upon ong-ages ment withthe respective rockers whieh'hayebeen set by the cams of the firstzmentioned slide and means; for efiectingthe securing, of saidcams in their adjusted relationson said other slide, including a single clamp plate-,piuotally supported intermediateits ends and, engaging two of. said, cams a-tits;opposite-endsuanda single clamp screw engaging, the. intermediate portion of said; clamp plate for zadjustably 'setting it into holding, engagement with: therespective' cams.

6. Apparatus for efieeting tuningand volumecontrol adjustmentsof a radio receiver, comprising. a slide, tuning and volume-control cams adjustably mounted on said slide, a single clamp:

plate for simultaneouslysecuring .or releasing both said cams, tuning and olume-control set-; ting rockers. engageable by said-camsfand means for efiectingadjustments: of saidrockers. and.

for enablingsaid. rocker-std effect. setting-of said: cams when said latter are freed, by said. clamp plate. v

Apparatus for effecting control= or variousinstrumentali-ties, comprising companion" slides. each having independently adjusted-cams, rockers' engageable and operable by said different. cams, means on one slide for setting the-cams thereon-in difierent positions, and meanszon theotherslidefor fixedly securing: -the--carns-thcreonbut releasable to free said camsaior setting of the same by engagement with. the.- .rockers aforesaid.

8. Apparatus. for effecting control of variousinstrumentalities, comprising companion slides" each having independently adjusted cams; rock-- ers engageableand operable by; said idiiierent cams, means on one slide .for setting the cams: thereon. in -wdifieren-t positions, and means on' the: other-slide tor fixedly securingthe -oams thereon but releasable {to free said camsJfor'setting' 0f: thevsaimez'by engagement with: the makers aforesaid, said means including a clamp plate.- pivot-- ally supported on the slide intermediateitsi ends and engaging the cams: thereon at its opposite ends and atscrewzengaging' the. intermediate per-- tion of said clamp: plate for wedging txhe same intozholding engagement with both cams.

.9. Apparatus for effecting wave band'selectioni and volume control: of a radio receiver and comprising independently operable. slides, a rocker for efiecting wave band. selection, a rocker tor efliecting volume control adjustments, carns o n:

the slides engageable with" the respectiveiocle ens-for efeeting: wave? band and: yol'ume'control entice? adjustments, nieans on'one slide for setting the cams thereon in-various positions. of wave band selection andv'olume control, and means on another ofsaid slidesforsecuring the cams thereon in adjusted relation and releasable to free the cams thereonfior setting by engagement with said rockers. 1

10. Apparatus for effectingwave' band selection and volume control of a radio "receiver and comprising independently operable slides, a rocker for effecting wave bandselection," a rocker for effecting volume control adjustments, cams on the slides engage'able-with the 'respectiverockers for effecting wave band and volume control adjustments, means on one slide for setting the cams thereon in various positions of wave band selection andvolume control, means on another of said slides for securing the. cams thereon in adjusted relation and releasable to free the cams thereon for setting by engagement with said rockers and means for holding the rockers while obtaining the setting of the cams therefrom.

11; In control apparatus, rockers for effecting various control adjustments, a slide movable toward and away from said rockers, means for adjusting said rockers and for holding the same temporarily in positions of adjustment, cams on the slide for actuating said rockers, a clamp on the slide for securing said cams in positions of adjustment and arranged to free said cams for adjustment by said rockers when the latter are held in fixed positions of adjustment.

1 12. Apparatus for waveband selection, tuning and volume control adjustments of a radio receiver comprising independently operable slides, wave band selecting, tuning and volume control cams adjustably mounted on one of said slides, means on said slide for effecting the setting of the wave band selecting, tuning and volume control adjusting cams on said slide, wave band selecting, tuning and volume control adjusting rockers en-. gageable and operable by the respective cams on said slide, wave band selecting, tuning and volume control cams adjustably mounted on another of the slides and free to be shifted to corresponding positions upon engagement with the respective rockers which have been set by the cams of the first mentioned slide and means-for effecting the securing of said free cams in their adjusted relations; onsaid other slide, including a single clamp adjustably engageable with all three of said wave band selecting, tuning and volume control cams.

13. Apparatus for wave band selection, tuning and volume control adjustments of a radio receiver comprising independently operable slides,

' wave band selecting, tuning and volume control cams adjustably mounted on one of said slides, means on said slide for effecting the setting of the wave band selecting, tuning and volume control adjusting cams on said slide, wave bandselecting, tuning and volume control adjusting rockers engageable and operable by the respective cams on said slide, wave band selecting, tuning and volume control cams adjustably mounted on another of the slides and free to be shifted to corresponding positions upon engagement with the respective rockers which have been set by the cams of the first mentioned slide and means for effecting the securing of said cams in their adjusted relations on said other slide, including a generally triangular shaped clamp plate and pressure applying means adjustably engageable with the central portion of said triangular plate, said wave band selecting, tuning and volume control cams being disposed in triangular relation for holding engagement by said substantially triangular clamp plate.

14. Apparatus for wave band selection, tuning and volume control adjustments of a radio receiver, comprising a movable slide, wave band selecting, tuning and volume control cams .pivotally mounted in generally triangular relation on said slide, a substantially triangular clamp plate adjustably engaging allthree of said cams, and Wave band selecting, tuning and volume control adjusting rockers mounted in, positionfor engage-, ment and actuation by said adjustably secured cams.

15. Apparatus for'wave band selection, tuning and volume'control adjustments of a radio receiver, comprising movable station selecting members, wave bandselecting, tuning and volume con-, trol cams angularly adjustable .on each of said members and disposed in substantially triangular relation to each other, a single, substantially triangular clamp in adjustable holding engagement with all three of said cams on each of said members, and wave band selecting, tuningand volume control adjusting rockers positioned for engagement and operation by the respective cams on said members.

16. Control apparatus closed comprising an operating slide, an actuating cam adjustably mountedonsaid slide, a-control rocker positioned to be engaged by said cam, means on the slide for effecting adjustments of said cam, means for temporarily locking the slide inpositionwith said cam engaged with the rocker to thereby hold said rocker in theposition to which it has been adjusted by said cam, a secondary slide, an actuatingcam loosely mounted on said secondary slide in position to be engaged with and adjusted by said held rockerwhen said secondary slide is pushed in when the operating slide is locked in and means on said secondary slide for securing the cam thereon in: the position to which it has been adjusted by said held rocker and whereby'said secondary slide will thereafter be capable of positioning said control rocker the same as said operating slide.

17. Apparatus for control purposes comprising rockers adjustable to effect different controls, means for setting said rockers to different control positions and for temporarily. holding them in those positions, member separately operable for effecting actuationpf said rockers, independently adjustable cams on each of said operating members located respectively to engage individual rockers, means on said members for securing the cams thereon in their independently adjusted relations and arranged when released to enable said cams upon engagement with temporarily held rockers to adjust themselves to the settings of the rockers so held and whereby upon securing said cams after attaining said settings, said members may be actuated to adjust said rockers to the positions in which they were temporarily held.

18. Apparatus for control purposes comprising actuated members adjustable to effect different controls, means for adjusting and holding said actuated members in different positions of adjustment, actuating members separately operable each to effect actuation of said actuated members, striker elements on each of said actuating members for operating engagement with the respective actuated members and arranged to be freed to enable them, by engagement with the actuated members, when so held, to adjust themselves to the particular settings of the held actuated members, and means for securing said striker elements on the actuating members in the posiof the, character disi'aeeeyooi '19; Apparatus for oontrolupm'poses comprising actuated members adjustable to 'efiect different controls, means for adjusting and holding said actuated members "indifferent positions of adjustment, actuating members separately operable each to effect actuation of said actuated members, striker elements "on "eachof said actuating members for operating engagement with the respective actuated-members and arranged to be freed to enable them by engagement with the actuated members, when so held; to adjust themselves to the particular settings of the held actuated members, andcomm'on means on each actnaltiirg =membenfor--securing -a11 of said striker elements thereon in their positions of adjustment.

Apparatus for-control purposes comprising rockers adjustable to efiectdifferent controls, means for settingand holdingisaid rockers in positions of desiredadjustment, slides operable toward said rockers, cams freely pivoted on said slides in positionto engage andv accept the settings o'f the rcckers so held; and means on each slide for secuijing 'said=free-cams '-in the positions to which they have been so adjusted.-

'21; Apparatus ffor control purposes comprising operating slides, cams adj ustably secured on said slides, "controhefiecting rockers positioned to be engaged-and-adjusted by said cams, fixed cams on the slides, a oontrol switch, arocker for shiftme said switch in -one'.-direetion andpositioned to-Beactuated by arm-loneof-=sa'id' '1'lx'ed cams on the slides, and means ir 'dependent 1 of said slides for actuating saidswitch -'-in the opposite direction.

Gontrol apparatus-comprising a set of individually operative function selecting- "slides, means for effecting selective individual actuation of said slides, "rockers -'operative for difierent control purposes, differently- --positi'oned-cams on said slides :engageable with-said rockers to adjust the same to fc'iit fereritposi tions, aswitch connected to "control the fiinctions of said slides, a magnet arranged tothrew-'said =s'witch to off position, a rocker arranged-tothrow said switch on and cams on's'aidslides positioned to actw.

ate said last'anentionedmockeriandawiierebyiactu ation of any oneiof said slides willrlresult Jim-the switchcon'troll'ing functions of the slides hein'g th1-own.'on-, in theieventssaidiswitch:ahas been left inithe off position by previoussoperation of said 0 I svn'tchthmwing magnet.

23. Apparatus for control purposessccmprising a plurality of difierent station selecting slides, said slides having exposed-tpush-buttonmeansiat the :ends orthe'sameand whereby said slides-maybeiindividuallymperatedby hand, a-iiplurality of cams a'djustably. mounted "onea'chof said slides; meansfor'securing saidvariablwadjustable camein difierent: set; positionsson: the rrespective slides; control iefiectin'grockersmositiened :for actua'tien by: the :diflerent' ca'msaon 1 any one or said-islides; springs for projecting the individualslides andslide retracting solenoids havmgseores connedted withtthe individual slides;

24. Apparatus .ior control purposes xeompiis'ing a plurality; of ndiiferent station selecting -zs'lldes said {slides ,having 'exposedtpush-hutton means-lat the endspfrthe samezand wherebyisaid slides may be. lindividuallyjoperated by .hand, aplura-lity o-f" cams; adj ustably mounted on :eachof 2 said- :sli'des;

means for sgcuring said .variably'ladiustablecams,

indifierentzset. positions Quiche-respective slides:

c ntrol effecting :rockersmositioneduor-actuation by the: v:cliiferen't cams .On any: one 10f saidfislldes;

springsior projecting.- thegindividual slides, slide". retracting solenoids having rcoresi-xsonnected-witm the individual --slides,;an'd a: manually operable hold-in device for 'releasably securingronevyof said slide in retracted; relation inde endently of the holding action; of theg-solenoidiacting on, that:

slide.

'I-I; "OWENS;

REFERENCES CITED The-following references file.- of this patent:

UNITED [STATES PATENTS Number Name Date 2;I08;5381 t Leishmam Fb. '15, 1938" 2,222,789 Tyzzer d a Nov. 26, 1 940 2272;6272' :Allen a- Feb, '10, 1942 -2;365 ,-088 Lane s .i. Dec, 1 2, -19'4'4' 2,376,860 Gersoh in. -J'an'. 2a, 1945- McGarvey-e Mar. 20, 1945 are of recordin the- 

